AC数的分离

`#include <bits/stdc++.h> using namespace std;

int main() {

long long n, k, p;
cin >> n >> k;
while (k > 1) {
	n = n / 10;
	k--;
	if (k == 1) {
		p = n % 10;
		cout << p;
		return 0;
	}
}
if(k==1){
	p=n%10;
	cout<<p;
}
return 0;

}`